Arcadia

Arcadia is a Light Integrated Development
Environment (IDE) for the Ruby language written in
Ruby using the classic Tcl/Tk GUI toolkit. Some
features include an editor with source browsing,
syntax highlighting, and code completion, debug
support, the ability to work on any platform where
Ruby and Tcl-Tk work, a highly extensibility
architecture, and support for RAD GUI building.

Release Notes: This release adds new extension terminal integration, adds buffer interchange between more instances of the editor, introduces internationalization, adds the ability to interact with a running application by typing input in the output console, and adds a new kind of view (list view) to file history (activated by a button on the toolbar).